"My father's cancer treatment"

My father has advanced prostate cancer and has been unable to walk, had severe back pain and has been sleeping and incontinent for over two months.

My mother has reported this to the oncologist. The oncologist simply informed my mother it was the progression of the cancer and they would no longer be offering him any hospital appointments.

This evening my father collapsed and has been seen by an NHS clinician and taken to hospital and diagnosed with hypercalcaemia. As this is relatively common when the cancer has spread to the bones (which had been previously diagnosed), why was this not checked? Why was it not considered or my parents informed it was a possibility? They have seemingly simply washed their hands of him, no advice or support or information on continued care. This shows a clear disregard for a terminally ill patient - now at risk in hospital.

We are hoping this is treatable. However my 80 year old mother with osteoarthritis has been cleaning his urine, putting her health at risk getting my father in and out of bed and stressed as she believed his unresponsiveness was due to his approaching end of life. 

I will also be complaining about his GP who, again, has not paid attention to the symptoms, identified the problems or raised this common condition as a possibility.

Had my mother not decided to call 999 out of fear my father was dying, we would not have discovered that this was due to a treatable condition. 

My father's lack of care, information and support has been disgraceful. None of this can be attributed to Covid pressures, an oncologist should still take cancer complications seriously.